As nerd-boys have been noticing for at least decades, women don't have to be attracted at all! But jumping up in to rationality land, there are plenty of reasons to want them to be attracted, not the least of them being that providing useful information on how to improve reasoning is valuable approximately proportional to the number of people who receive it, and there are nearly as many women as men out there in the potential audience.
women don't have to be attracted at all!
I certainly wasn't saying that LW shouldn't make an effort to attract women. I'm female myself, and I'd be happy to have more people who look like me around, and I agree with you about the reasons why as well.
The key part of my sentence there is "via discussion of babies," because as a female, I wouldn't like that particular method of attracting women at all. I think there might be other ways that would be more effective and that also wouldn't dilute the substance of the common interests that bring us here.
I've always been more of a theoretician, but it's important to try one's hand at practical problems from time to time. In that vein, I've decided to try three simultaneous experiments on major Less Wrong themes. I will aim to acquire something to protect, I will practice training a seed intelligence, and I will become more familiar with many consequences of evolutionary psychology.
In the spirit of efficiency I'll combine all these experiments into one:
She's never seen Star Wars or Doctor Who.
She's never seen David Attenborough or read J. L. Borges.
She's never had a philosophical debate.
She's never been skiing.
Never had sex, never been hugged or even been licked by a dog!
She has so much to look forwards to...
(Though she'll be very boring for several months yet!)